X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-strerror.c;h=3ffb12e8f614304038478250f3f0e84cea7318b7;hb=4d0c5cc2198e6e0680d403cd4048cdc0d78cff26;hp=22e9f5ad951e46f06b5efa3e99736b1d2c6aa61b;hpb=3e2d7ac6c75ad7c92d25f59d11bd455d37ba4e37;p=gnulib.git

diff --git a/tests/test-strerror.c b/tests/test-strerror.c
index 22e9f5ad9..3ffb12e8f 100644
--- a/tests/test-strerror.c
+++ b/tests/test-strerror.c
@@ -1,5 +1,5 @@
 /* Test of strerror() function.
-   Copyright (C) 2007-2009 Free Software Foundation, Inc.
+   Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -21,46 +21,56 @@
 
 #include <string.h>
 
+#include "signature.h"
+SIGNATURE_CHECK (strerror, char *, (int));
+
 #include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#define ASSERT(expr) \
-  do                                                                         \
-    {                                                                        \
-      if (!(expr))                                                           \
-        {                                                                    \
-          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
-          fflush (stderr);                                                   \
-          abort ();                                                          \
-        }                                                                    \
-    }                                                                        \
-  while (0)
+
+#include "macros.h"
 
 int
 main (void)
 {
   char *str;
 
+  errno = 0;
   str = strerror (EACCES);
   ASSERT (str);
   ASSERT (*str);
+  ASSERT (errno == 0);
 
+  errno = 0;
   str = strerror (ETIMEDOUT);
   ASSERT (str);
   ASSERT (*str);
+  ASSERT (errno == 0);
 
+  errno = 0;
   str = strerror (EOVERFLOW);
   ASSERT (str);
   ASSERT (*str);
+  ASSERT (errno == 0);
 
+  /* POSIX requires strerror (0) to succeed.  Reject use of "Unknown
+     error", but allow "Success", "No error", or even Solaris' "Error
+     0" which are distinct patterns from true out-of-range strings.
+     http://austingroupbugs.net/view.php?id=382  */
+  errno = 0;
   str = strerror (0);
   ASSERT (str);
   ASSERT (*str);
+  ASSERT (errno == 0);
+  ASSERT (strstr (str, "nknown") == NULL);
+  ASSERT (strstr (str, "ndefined") == NULL);
 
+  /* POSIX requires strerror to produce a non-NULL result for all
+     inputs; as an extension, we also guarantee a non-empty reseult.
+     Reporting EINVAL is optional.  */
+  errno = 0;
   str = strerror (-3);
   ASSERT (str);
   ASSERT (*str);
+  ASSERT (errno == 0 || errno == EINVAL);
 
   return 0;
 }